The Meramec watershed (HUC 07140102) covers approximately 4,900 square miles in eastern Missouri. The watershed is characterized by rolling hills, forests, and agricultural land. The Meramec River, which is the primary surface water feature in the watershed, flows for 218 miles and empties into the Mississippi River. The watershed is also home to several smaller rivers and streams. The hydrology of the watershed is heavily influenced by precipitation patterns, with the majority of the annual rainfall occurring during the spring and summer months. The watershed experiences occasional flooding, particularly in areas with urban development. The area occasionally experiences significant snowfall, particularly in the northern parts of the watershed. Reservoirs in the watershed are used for flood control and water supply for nearby communities, and are monitored for water quality constituents such as nutrients, sediment, and bacteria. In recent years, the region has experienced a trend of warmer temperatures and increased precipitation, which has led to more intense rainfall events and flooding. The area has also seen an increase in severe weather events, including tornadoes and damaging windstorms.